Malignant ascites and pleural effusion are common symptoms in patients with advanced cancer. Currently, the management of malignant ascites and pleural effusion is a considerable clinical challenge. The investigator hypothesized that tumor cell-derived microparticles packaging chemotherapeutic drugs might be a useful means to treat malignant ascites and pleural effusion. Thirty malignant ascites or pleural effusion patients will be recruited for Phase II clinical trials.